Did God write the second set of the Ten Commandments Exodus 34 v1 or Moses Exodus 34 v27?

God inscribed the Law on the first pair of tablets. When Moses came back down from the mountain, though, he discovered that the people had already broken the law and were sinning greatly. In anger Moses smashed the tablets. After this God commanded Moses to return to the mountain, create two more tablets of stone, and inscribe the Law on these replacements. Presumably Moses had memorized what was on the first tablets, or God told Moses what to write.